Adding to 13424216 its reverse (61242431), we get a palindrome (74666647).
13424216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
Almost surely, 213424216 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13424216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14023800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13424216 is a wasteful number, since it uses less digits than its factorization.
13424216 is an evil number, because the sum of its binary digits is even.
The square root of 13424216 is about 3663.9072040651. The cubic root of 13424216 is about 237.6637673812.
The spelling of 13424216 in words is "thirteen million, four hundred twenty-four thousand, two hundred sixteen".